Finding and Preventing CSRF Vulnerabilities in Web Applications

Web applications are constantly exposed to security threats, and Cross-Site Request Forgery (CSRF) remains one of the most critical vulnerabilities that developers must understand. Without proper defenses, malicious sites can force a user's browser to perform unwanted actions on a trusted site where they are currently authenticated. This text-based course guides you through the mechanics of CSRF attacks, teaching you how to analyze web application behavior, identify weak points, and implement robust security measures. You will gain the practical skills needed to audit code for vulnerability risks and protect user data from unauthorized requests. What you'll learn: Understand the foundational mechanics of Cross-Site Request Forgery (CSRF) and how browsers handle authenticated sessions; Identify common vulnerabilities in web applications, including the risks of exposing sensitive data in query parameters; Analyze HTTP requests and responses to detect potential attack vectors in web forms and APIs; Apply modern defense strategies, including anti-CSRF tokens and SameSite cookie attributes; Practice identifying flaws through structured written walkthroughs and code-based scenarios. The course begins with essential web security terminology and foundational concepts before moving into practical code analysis and mitigation strategies. You will progress from understanding simple GET and POST vulnerabilities to configuring modern cookie-based defenses. Designed for beginner developers and aspiring security analysts, this course requires no prior cybersecurity experience. Start learning how to secure your web applications against unauthorized requests today.